{"action":"create","ckan_id":null,"date_created":"Mon, 15 Dec 2025 21:04:07 GMT","date_finished":null,"harvest_job_id":"07f21da6-6aa8-42db-b42a-36dbcc1884d9","harvest_source_id":"b1bd9ece-a304-434d-80e3-1800ab1742db","id":"2a187a9b-b064-41a8-8972-6afedf4c55c5","identifier":"https://data.noaa.gov/waf/NOAA/NESDIS/ncei/paleo/iso/xml/noaa-recon-6254.xml","parent_identifier":null,"source_hash":"d58d5090453b91c7a9629376c38bbb07a3923777aa3904da4e28d0d484a88d6e","source_raw":"\r\n \r\n noaa-recon-6254\r\n \r\n \r\n eng; USA\r\n \r\n \r\n utf8\r\n \r\n \r\n dataset\r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA World Data Service for Paleoclimatology\r\n \r\n \r\n Data Center Contact\r\n \r\n \r\n \r\n \r\n \r\n \r\n 828-271-4800\r\n \r\n \r\n 303-497-6513\r\n \r\n \r\n \r\n \r\n \r\n \r\n 325 Broadway, E/NE31\r\n \r\n \r\n Boulder\r\n \r\n \r\n CO\r\n \r\n \r\n 80305-3328\r\n \r\n \r\n USA\r\n \r\n \r\n paleo@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n 2023-09-01\r\n \r\n \r\n ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data\r\n \r\n \r\n ISO 19115-2:2009(E)\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA/WDS Paleoclimatology - Cook et al. 2002 Well-Verified Multiproxy Winter NAO Reconstruction\r\n \r\n \r\n \r\n \r\n 2002-07-01\r\n \r\n \r\n publication\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n doi:10.25921/nynk-q091\r\n \r\n \r\n \r\n \r\n \r\n \r\n noaa-recon-6254\r\n \r\n \r\n \r\n \r\n \r\n \r\n NCEI DSI 1200_02\r\n \r\n \r\n \r\n \r\n \r\n \r\n NCEI DSI 1200_01\r\n \r\n \r\n \r\n \r\n \r\n \r\n Cook, E.R.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Cook, E.R.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n D'Arrigo, R.D.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n D'Arrigo, R.D.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Mann, M.E.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Mann, M.E.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n tableDigital\r\n \r\n \r\n \r\n \r\n This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Climate Reconstruction. The data include parameters of instrumental with a geographic location of North Atlantic Ocean. The time period coverage is from 550 to -51 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.\r\n \r\n \r\n Records of past temperature, precipitation, and other climate variables derived from paleoclimate proxies. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations.\r\n \r\n \r\n completed\r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA World Data Service for Paleoclimatology\r\n \r\n \r\n Data Center Contact\r\n \r\n \r\n \r\n \r\n \r\n \r\n 828-271-4800\r\n \r\n \r\n 303-497-6513\r\n \r\n \r\n \r\n \r\n \r\n \r\n 325 Broadway, E/NE31\r\n \r\n \r\n Boulder\r\n \r\n \r\n CO\r\n \r\n \r\n 80305-3328\r\n \r\n \r\n USA\r\n \r\n \r\n paleo@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-recon.png\r\n \r\n \r\n Paleoclimatology - Climate Reconstruction\r\n \r\n \r\n PNG\r\n \r\n \r\n \r\n \r\n \r\n \r\n Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Science Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n earth science > paleoclimate > instrumental\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|ice cores|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|ice cores|tree ring\r\n \r\n \r\n earth science > paleoclimate > reconstructions\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Science Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Atmospheric and Oceanic Circulation Patterns Reconstruction\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: null\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: null\r\n \r\n \r\n What: age; Material: null\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Paleoenvironmental Standard Terms (PaST) Thesaurus\r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus\r\n \r\n \r\n PaST Thesaurus\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Ocean > Atlantic Ocean > North Atlantic Ocean > North Atlantic Oscillation > LATITUDE > LONGITUDE\r\n \r\n \r\n place\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce\r\n \r\n \r\n dataCentre\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Data Center Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n Cite as: Cook, E.R.; D'Arrigo, R.D.; Mann, M.E. (2002-07-01): NOAA/WDS Paleoclimatology - Cook et al. 2002 Well-Verified Multiproxy Winter NAO Reconstruction. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/nynk-q091. Accessed [date].\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n None\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since A.D. 1400\r\n \r\n \r\n \r\n \r\n 2002\r\n \r\n \r\n publication\r\n \r\n \r\n \r\n \r\n \r\n \r\n Cook, E.R., D'Arrigo, R.D., and Mann, M.E.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Journal of Climate\r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://doi.org/10.1175/1520-0442(2002)015<1754:AWVMRO>2.0.CO;2\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Web Browser\r\n \r\n \r\n Associated Reference published 2002\r\n \r\n \r\n Cook, E.R., D'Arrigo, R.D., and Mann, M.E., 2002: A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since A.D. 1400. Journal of Climate, 15, 1754-1764, 10.1175/1520-0442(2002)015<1754:AWVMRO>2.0.CO;2\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n crossReference\r\n \r\n \r\n sciencePaper\r\n \r\n \r\n \r\n \r\n eng; USA\r\n \r\n \r\n geoscientificInformation\r\n \r\n \r\n \r\n \r\n Date Range: 1400 CE to 2001 CE; Date Range: 550 cal yr BP to -51 cal yr BP;\r\n \r\n \r\n \r\n \r\n -50\r\n \r\n \r\n -10\r\n \r\n \r\n 38\r\n \r\n \r\n 65\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n 1400\r\n 2001\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n ABSTRACT SUPPLIED BY ORIGINATOR: A new, well-verified, multiproxy reconstruction of the winter North Atlantic Oscillation (NAO) index is described that can be used to examine the variability of the NAO prior to twentieth century greenhouse forcing. It covers the period a.d. 1400\u20131979 and successfully verifies against independent estimates of the winter NAO index from European instrumental and noninstrumental data as far back as 1500. The best validation occurs at interannual timescales and the weakest at multidecadal periods. This result is a significant improvement over previous proxy-based estimates, which often failed to verify prior to 1850, and is related to the use of an extended reconstruction model calibration period that reduced an apparent bias in selected proxies associated with the impact of anomalous twentieth century winter NAO variability on climate teleconnections over North Atlantic sector land areas. Although twentieth century NAO variability is somewhat unusual, comparable periods of persistent positive-phase NAO are reconstructed to have occurred in the past, especially before 1650.\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n distributor\r\n \r\n \r\n \r\n \r\n \r\n \r\n In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.\r\n \r\n \r\n Contact NCEI for other distribution options and instructions.\r\n \r\n \r\n \r\n \r\n \r\n \r\n Native Format(s)\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://doi.org/10.25921/nynk-q091\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Landing Page\r\n \r\n \r\n Metadata Landing Page\r\n \r\n \r\n NCEI landing page with general information and links to access the data.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/access/paleo-search/study/6254\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Web Browser\r\n \r\n \r\n NOAA Study Page\r\n \r\n \r\n Study page with data access information.\r\n \r\n \r\n search\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Information\r\n \r\n \r\n NCEI Climate Reconstruction Page\r\n \r\n \r\n General information for this data type.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/pub/data/paleo/treering/reconstructions/nao_cook2002-noaa.txt\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Download\r\n \r\n \r\n NCEI Direct Download\r\n \r\n \r\n Direct download links for dataset files.\r\n \r\n \r\n download\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n asNeeded\r\n \r\n \r\n This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21\r\n \r\n \r\n \r\n","source_transform":{"@type":"dcat:Dataset","accessLevel":"non-public","contactPoint":{"fn":"Not provided - Contact data.gov","hasEmail":"mailto:datagovsupport@gsa.gov"},"describedByType":"application/octet-steam","description":"This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Climate Reconstruction. The data include parameters of instrumental with a geographic location of North Atlantic Ocean. The time period coverage is from 550 to -51 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.","distribution":[{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"NCEI landing page with general information and links to access the data.","downloadURL":"https://doi.org/10.25921/nynk-q091","mediaType":"placeholder/value","title":"Metadata Landing Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Study page with data access information.","downloadURL":"https://www.ncei.noaa.gov/access/paleo-search/study/6254","mediaType":"placeholder/value","title":"NOAA Study Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"General information for this data type.","downloadURL":"https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction","mediaType":"placeholder/value","title":"NCEI Climate Reconstruction Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Direct download links for dataset files.","downloadURL":"https://www.ncei.noaa.gov/pub/data/paleo/treering/reconstructions/nao_cook2002-noaa.txt","mediaType":"placeholder/value","title":"NCEI Direct Download"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Cook, E.R., D'Arrigo, R.D., and Mann, M.E., 2002: A Well-Verified, Multiproxy Reconstruction of the Winter North Atlantic Oscillation Index since A.D. 1400. Journal of Climate, 15, 1754-1764, 10.1175/1520-0442(2002)015<1754:AWVMRO>2.0.CO;2","downloadURL":"https://doi.org/10.1175/1520-0442(2002)015<1754:AWVMRO>2.0.CO;2","mediaType":"placeholder/value","title":"Associated Reference published 2002"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords","downloadURL":"https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords","mediaType":"placeholder/value","title":"GCMD Keyword Forum Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","downloadURL":"https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus","mediaType":"placeholder/value","title":"PaST Thesaurus"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Information for contacts at NCEI.","downloadURL":"https://www.ncei.noaa.gov/contact","mediaType":"placeholder/value","title":"NCEI Contact Information"}],"identifier":"noaa-recon-6254","issued":"2002-07-01T00:00:00.000+00:00","keyword":["Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions","earth science > paleoclimate > instrumental","earth science > paleoclimate > climate reconstructions|ice cores|tree ring","earth science > paleoclimate > climate reconstructions|ice cores|tree ring","earth science > paleoclimate > reconstructions","Atmospheric and Oceanic Circulation Patterns Reconstruction","What: North Atlantic Oscillation Index; Material: null","What: North Atlantic Oscillation Index; Material: null","What: age; Material: null","Ocean > Atlantic Ocean > North Atlantic Ocean > North Atlantic Oscillation > LATITUDE > LONGITUDE","DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce"],"language":[],"license":"https://creativecommons.org/publicdomain/zero/1.0/","modified":"2002-07-01T00:00:00.000+00:00","publisher":{"@type":"org:Organization","name":"NOAA National Centers for Environmental Information"},"references":["https://doi.org/10.1175/1520-0442(2002)015<1754:AWVMRO>2.0.CO;2"],"rights":"otherRestrictions, otherRestrictions","spatial":"-10.0,38.0,-50.0,65.0","temporal":"1400-01-01T00:00:00+00:00/2001-01-01T00:00:00+00:00","title":"NOAA/WDS Paleoclimatology - Cook et al. 2002 Well-Verified Multiproxy Winter NAO Reconstruction"},"status":"error"}